CN114212955A - Method for treating pig slaughtering wastewater - Google Patents
Method for treating pig slaughtering wastewater Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/147—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using organic substances
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2001/007—Processes including a sedimentation step
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- C02F2101/30—Organic compounds
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
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- C02F3/30—Aerobic and anaerobic processes
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- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- General Chemical & Material Sciences (AREA)
- Activated Sludge Processes (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
A method for treating pig slaughtering wastewater comprises the following steps: A. pretreating wastewater; B. oil removal and precipitation; C. air floatation treatment; D. HA-UBF reaction; E. two-stage A/O reaction; F. settling and flocculating; G. and (3) disinfection: the water discharged from the disinfection area enters a detoxification area, an oxygenation aeration system is arranged in the detoxification area to accelerate the degradation and dissipation of residual chlorine, and the water body is oxygenated simultaneously, so that the discharged water is clear, and the water discharged from the disinfection tank reaches the first-level A discharge standard and is directly discharged; H. and (4) sludge treatment. The method is simple and easy to operate, and can be used for pretreating the pig slaughter wastewater according to the quality, and the excrement and the sewage are firstly intercepted and used as compost, so that the waste recycling can be realized, the wastewater treatment efficiency and quality are improved, and the social and economic benefits are remarkable.
Description
Technical Field
The invention relates to wastewater treatment, in particular to a method for treating pig slaughtering wastewater.
Background
The waste water discharged in the process of slaughtering live pigs and processing meat products contains a large amount of blood pollutants, grease, hair, visceral impurities, undigested food, excrement and other pollutants, has uncomfortable bloody red color and bloody fishy smell, and also contains pathogenic bacteria harmful to human health such as coliform bacteria, excrement streptococcus and the like. The waste water has the characteristics of large concentration change, high organic matter content and the like, and is directly discharged into the environment to seriously pollute the water body.
Patent document CN 201710785271.6 provides a process for the treatment of slaughter wastewater using CSTR-coagulative precipitation-a/O technology, said process essentially comprising: conveying slaughter wastewater into a water collecting tank, conveying the slaughter wastewater into a CSTR (continuous stirred tank reactor) for reaction, automatically flowing effluent into a regulating tank, a coagulating sedimentation tank, an A/O (anoxic/oxic) reaction tank and a secondary sedimentation tank, carrying out mud-water separation in the secondary sedimentation tank, introducing supernatant into a disinfection tank, disinfecting and then discharging the supernatant to reach the standard, refluxing partial sludge at the bottom of the sedimentation tank to an anoxic tank, discharging residual sludge into a sludge concentration tank through a sludge pump, concentrating the residual sludge through gravity, dehydrating the sludge through a plate and frame filter press, and transporting the sludge outside. However, several coagulants are actually developed and respectively contain different components, and the method is only verified in a laboratory, has larger difference with the actual water quality of the pig slaughter wastewater, is not strong in practicability and is difficult to stably reach the standard. Application number CN201921218697.4 discloses a slaughter effluent treatment plant, this slaughter effluent treatment plant include grid well, aeration control tank, sieve filtering pond, oil removal sedimentation tank, air supporting pond, sump pit, USAB pond, CASS pond and the buffer pool that sets gradually along the waste water treatment direction, and aeration control tank's delivery port promotes through first water pump sieve filtering pond, sump pit's delivery port promotes to the USAB pond through the second water pump, and sieve filtering pond sets up row's cinder notch, and oil removal sedimentation tank, air supporting pond, USAB pond and CASS pond all set up the drain, and row's cinder notch and drain all are connected with sludge thickening tank, and sludge thickening tank is connected with sludge dewatering machine room, the filtration liquid of sludge dewatering machine room and the supernatant of sludge thickening tank all flow back to aeration control tank. Although the method has certain practicability, the removal of total nitrogen and total phosphorus by adopting the CASS process still does not fully consider the requirement of slaughter wastewater discharge, and the stable reaching of the standard is difficult, so that the further improvement of the method for treating the pig slaughter wastewater is an urgent technical problem to be solved.
Disclosure of Invention
In view of the above situation, the present invention aims to provide a method for treating pig slaughter wastewater, which can effectively solve the problems that the existing treatment method does not perform quality separation pretreatment on the pig slaughter wastewater, and the treated effluent can not meet the discharge requirement.
In order to achieve the aim, the invention provides a method for treating pig slaughter wastewater, which comprises the following steps:
A. wastewater pretreatment: waste water to be slaughtered and production and domestic sewage respectively enter a first grating and a second grating for filtration treatment to remove larger suspended matters, floating matters, fiber substances and solid particle substances in the sewage, grating residues are transported outside for additional treatment, the waste water filtered by the first grating and the second grating respectively enters a septic tank and a water collecting well, then is lifted by a pump to enter a first solid-liquid separator and a second solid-liquid separator to remove fine impurities and excrement, and the effluent enters an adjusting tank;
the first grating and the second grating are both mechanical gratings, and the grating gap is 2-5 mm; the first solid-liquid separator and the second solid-liquid separator are inclined screen type solid-liquid separators, and the screen gap is 0.1-0.5 mm;
B. oil removal and precipitation: mixing the wastewater uniformly in an adjusting tank, adjusting the water quality and the water quantity, adjusting the pH value to be 6-9, allowing the effluent of the adjusting tank to enter an oil separation sedimentation tank, removing suspended matters and animal and vegetable oil in the wastewater, performing oil separation sedimentation treatment, and allowing the wastewater to flow to an advection flotation tank;
C. air floatation treatment: adding 30-80mg/L PAC and 2-5mg/L PAM into an advection flotation tank to remove most suspended matters and animal and vegetable oil in wastewater, and feeding effluent into an intermediate water tank for temporary storage and then into an HA-UBF device;
D. HA-UBF reaction: adding activated sludge with hydrolytic acidification bacteria, methanogen strains, nitrosobacteria and anaerobic ammonium oxidation bacteria into an HA-UBF device, removing most organic matters through hydrolytic acidification and methanogenesis, simultaneously converting refractory macromolecular organic matters into degradable micromolecular organic matters, and respectively feeding the treated wastewater into a first anoxic tank and a second anoxic tank through a first tee joint;
E. two-stage A/O reaction: the wastewater treated by the HA-UBF device sequentially enters a first anoxic tank, a first contact oxidation tank, a second anoxic tank and a second contact oxidation tank to carry out two-stage A/O reaction, most pollutants CODcr, ammonia nitrogen, total nitrogen and total phosphorus are degraded and removed, and the effluent of the second contact oxidation tank enters a secondary sedimentation tank;
F. precipitation and flocculation: the sludge and water separation of the wastewater in a secondary sedimentation tank is realized, the sludge in the secondary sedimentation tank respectively enters a first anoxic tank and a sludge concentration tank through a second tee joint, the effluent of the secondary sedimentation tank enters a flocculation reaction tank, PAC and PAM are added into the flocculation reaction tank, the dosage of PAC is 20-50mg/L, the dosage of PAM is 1-3mg/L, the flocculation reaction is 0.5-1h, the reaction mixed liquid enters a high-efficiency sedimentation tank, and hydraulic power stays for 1-2h for deep sedimentation to remove suspended matters and residual phosphate in the water;
G. and (3) disinfection: the effluent of the high-efficiency sedimentation tank enters a disinfection tank, the disinfection tank comprises a disinfection area and a disinfection area which are communicated through a pipeline, 5-10mg/L of chlorine-containing disinfectant or peroxide disinfectant is added into the disinfection area, the chlorine-containing disinfectant or the peroxide disinfectant kills pathogenic bacteria in the wastewater, the wastewater hydraulically stays in the disinfection tank for 1-2h, wherein the disinfection area stays for more than 30min, the effluent of the disinfection area enters the disinfection area, an oxygen charging and aerating system is arranged in the disinfection area to accelerate degradation and dissipation of residual chlorine, and oxygen is charged into a water body to clear the effluent, and the effluent of the disinfection tank reaches a first-level A discharge standard and is directly discharged;
H. sludge treatment: and (3) the sludge in the secondary sedimentation tank and the high-efficiency sedimentation tank enters a sludge concentration tank for concentration, the concentrated sludge enters a dehydrator for dehydration, 2-5mg/L PAM is added into the dehydrator, the separated dry sludge is transported out for disposal, and the filtrate enters a septic tank for secondary filtration.
The method is simple and easy to operate, and can be used for pretreating the pig slaughter wastewater according to the quality, and the excrement and the sewage are firstly intercepted and used as compost, so that the waste recycling can be realized, the wastewater treatment efficiency and quality are improved, and the social and economic benefits are remarkable.
Drawings
FIG. 1 is a schematic diagram of the process of the present invention.
FIG. 2 is a schematic diagram of the HA-UBF device of the present invention.
Detailed Description
The following detailed description of the embodiments of the invention is provided in connection with the accompanying drawings and the detailed description.
The invention, when used in particular, is illustrated by the following examples, which are given in conjunction with the accompanying drawings.
A method for treating pig slaughtering wastewater comprises the following steps:
A. wastewater pretreatment: waste water to be slaughtered and production and domestic sewage respectively enter a first grating 1 and a second grating 4 with a grating gap of 2mm, and are filtered to remove larger suspended matters, floating matters, fiber substances and solid particle substances in the sewage, so that the normal operation of a subsequent treatment structure is ensured, the treatment load of the subsequent treatment structure is reduced, grating residues are transported outside and are additionally treated, the waste water filtered by the first grating 1 and the second grating 4 respectively enters a septic tank 2 and a water collecting well 5, and then is lifted by a lifting pump to enter a first solid-liquid separator 3 and a second solid-liquid separator 6 with a screen gap of 0.2mm, so that fine impurities and excrement are removed, and the effluent enters an adjusting tank 7;
B. oil removal and precipitation: a stirrer is arranged in the adjusting tank 7, wastewater is uniformly mixed in the adjusting tank 7, the water quality and the water quantity are adjusted, the pH value is adjusted to be 6-9, the effluent of the adjusting tank 7 enters an oil separation sedimentation tank 8, suspended matters and animal and vegetable oil in the wastewater are removed, and the wastewater flows to an advection flotation tank 9 after oil separation sedimentation treatment;
C. air floatation treatment: 40mg/L PAC and 3mg/L PAM are added into the advection floatation tank 9 to remove most suspended matters and animal and vegetable oil in the wastewater, and the effluent enters an intermediate water tank 10 for temporary storage and then enters an HA-UBF device 11;
D. HA-UBF reaction: activated sludge with hydrolytic acidification bacteria, methanogen strains, nitrosobacteria and anaerobic ammonium oxidation bacteria is added into an HA-UBF device 11, most organic matters are removed through hydrolytic acidification and methanogenesis, meanwhile, macromolecule organic matters which are difficult to degrade are converted and degraded into micromolecule organic matters, most organic pollutants in the sewage are degraded into methane and carbon dioxide through anaerobic fermentation in the HA-UBF device 11 and can be recycled or combusted and discharged, and the treated wastewater respectively enters a first anoxic tank 12 and a second anoxic tank 14 through a first tee joint 24;
the HA-UBF 11 is composed of 4 reaction regions from bottom to top: the first reaction area is a granular sludge area 11-1 at the lower part, sludge in the granular sludge area 11-1 is enriched with hydrolytic acidification bacteria and methanogenic bacteria, macromolecular organic matters which are difficult to degrade in water are degraded, biodegradable micromolecular organic matters are converted, and most organic matters in water are removed; the second reaction area is a suspended sludge area 11-2, sludge in the suspended sludge area 11-2 is enriched with methanogen and anaerobic ammonium oxidation bacteria, organic matters in water are further removed, and meanwhile, anaerobic ammonium oxidation denitrification reaction is carried out; the third reaction area is a three-phase separation area 11-3, the fourth reaction area is a filler area 11-4 at the upper part, the bottom of the filler area 11-4 is provided with a micro-oxygen aerator, dissolved oxygen is controlled to be 0.2-1mg/L, activated sludge with nitrosobacteria and anaerobic ammonium oxidation bacteria is added in the area, a biological film is attached to the surface of the filler, the outer layer of the film mainly comprises nitrosobacteria, the inner layer mainly comprises anaerobic ammonium oxidation bacteria, under the micro-oxygen aeration condition, part of ammonia nitrogen is converted into nitrite by the nitrosobacteria by utilizing a carbon source, the nitrite is transferred to the inner part of the film and oxidized by the anaerobic ammonium oxidation bacteria, the ammonia oxidation bacteria oxidize the ammonia nitrogen by taking the nitrite as an electron acceptor and generate nitrogen and a small amount of nitrate, and the preposed denitrification and decarburization effects are realized;
E. two-stage A/O reaction: the wastewater treated by the HA-UBF device 11 sequentially enters a first anoxic tank 12, a first contact oxidation tank 13, a second anoxic tank 14 and a second contact oxidation tank 15 for two-stage A/O reaction, most pollutants CODcr, ammonia nitrogen, total nitrogen and total phosphorus are removed by degradation, and the effluent of the second contact oxidation tank 15 enters a secondary sedimentation tank 16;
the HA-UBF device 11 is divided according to the proportion of 3:1 and respectively enters a first anoxic tank 12 and a second anoxic tank 14, nitrite brought by the HA-UBF device 11 in the first anoxic tank 12 is firstly converted into nitrogen by denitrifying bacteria by using a carbon source to be discharged out of a water body, nitrate returned from a second contact oxidation tank 15 is also converted into nitrogen by the denitrifying bacteria by using the carbon source to be discharged out of the water body, phosphorus accumulating bacteria returned from the second anoxic tank 14 and a secondary sedimentation tank 16 release phosphorus and absorb the carbon source in carbon source storage under the anaerobic condition; the effluent of the first anoxic tank 12 enters a first contact oxidation tank 13, nitrifying bacteria in a biological membrane and a water body convert ammonia nitrogen in the wastewater into nitrate, and phosphorus accumulating bacteria begin to utilize an internal carbon source and excessively absorb phosphorus to be stored in cells under an aerobic condition; the effluent of the first contact oxidation pond 13 enters a second anoxic pond 14, nitrate generated by the first contact oxidation pond 13 is converted into nitrogen by denitrifying bacteria by using a carbon source and is discharged out of a water body, and phosphorus accumulating bacteria are inhibited without phosphorus release due to the existence of a large amount of nitrate and relative shortage of the carbon source in the pond; the effluent of the second anoxic tank 14 enters a second contact oxidation tank 15, residual ammonia nitrogen in the wastewater is converted into nitrate by nitrifying bacteria in a biomembrane and a water body, the effluent of the second contact oxidation tank 15 enters a secondary sedimentation tank 16 to realize sludge-water separation, the mixed solution of the second anoxic tank 14 and the second contact oxidation tank 15 flows back to the first anoxic tank 12, and most pollutants CODcr, ammonia nitrogen, total nitrogen and total phosphorus are degraded and removed through the action of microorganisms and sludge discharge;
aeration devices are arranged at the bottoms of the first contact oxidation tank 13 and the second contact oxidation tank 15, an air outlet of the magnetic suspension blower 23 is communicated with an air inlet of the aeration device through a pipeline, and the magnetic suspension blower 23 provides aeration to increase the dissolved oxygen;
F. precipitation and flocculation: the sludge-water separation of the wastewater in the secondary sedimentation tank 16 is realized, the sludge in the secondary sedimentation tank 16 respectively enters the first anoxic tank 12 and the sludge concentration tank 20 through the second tee joint 25, the amount of the sludge which flows back to the first anoxic tank 12 and the sludge which enters the sludge concentration tank 20 can be adjusted through the diameter of a pipeline connected with the second tee joint 25, the effluent of the secondary sedimentation tank 16 enters the flocculation reaction tank 17, PAC and PAM are added into the flocculation reaction tank 17, the dosage of PAC is 25mg/L, the dosage of PAM is 1mg/L, the flocculation reaction is carried out for 0.5-1h, the reaction mixed liquid enters the high-efficiency sedimentation tank 18, the hydraulic power stays for 1-2h, the deep sedimentation is carried out, and suspended matters and residual phosphates in the water are removed;
G. and (3) disinfection: the effluent of the high-efficiency sedimentation tank 18 enters a disinfection tank 19, the disinfection tank 19 is divided into a disinfection area and a detoxification area, the disinfection area is connected with the detoxification area in series, 6mg/L of sodium hypochlorite is added into the disinfection area of the disinfection tank 19, the sodium hypochlorite kills pathogenic bacteria such as escherichia coli, fecal streptococcus and the like in the wastewater, the wastewater hydraulically stays for 1-2h in the disinfection tank 19, wherein the disinfection area stays for 35min, the effluent of the disinfection area automatically flows into the detoxification area, the detoxification area is provided with an oxygenation aeration system, so that the degradation and dissipation of residual chlorine can be accelerated, the overproof of discharged water chlorine can be avoided, meanwhile, the water can be oxygenated, the effluent is clear, the effluent of the disinfection tank reaches the first-level A discharge standard, and can be directly discharged;
H. sludge treatment: the sludge in the secondary sedimentation tank 16 and the high-efficiency sedimentation tank 18 enters a sludge concentration tank 20 for concentration, the concentrated sludge enters a dehydrator 21 for dehydration, 3mg/L PAM is added into the dehydrator 21, the dehydrated dry sludge is transported out for disposal, and the filtrate enters a septic tank 2 for secondary filtration, so that redundant wastewater is avoided.
In the specific implementation of the invention, the wastewater quality of the sewage treatment station is shown in table 1, and the discharge standard is shown in table 2:
TABLE 1 Water quality meter
TABLE 2 effluent quality Standard
Waste water to be slaughtered, production and domestic sewage of a sewage treatment station respectively enter a grid of the sewage treatment station through a factory sewage collecting pipeline to remove larger suspended matters, floating matters, fiber substances and solid particle substances in the sewage, the waste water to be slaughtered automatically flows to a septic tank after passing through a grid well, the production and domestic sewage automatically flows to a water collecting well, the waste water is lifted by a lifting pump to enter an inclined screen type solid-liquid separator to remove fine sundries and excrement, the effluent of the inclined screen type solid-liquid separator automatically flows into a regulating tank, air stirring is arranged in the regulating tank, the waste water is uniformly mixed in the regulating tank, and the water quality and water quantity are regulated. The adjusting tank sewage is extracted by a sewage lifting pump to enter an oil separation sedimentation tank for removing suspended matters and animal and vegetable oil in the sewage, and after oil separation sedimentation treatment, the wastewater flows to an advection air floatation tank, and an air floatation device further removes most suspended matters and animal and vegetable oil in the water. After air floatation treatment, sewage automatically flows into an intermediate pool for temporary storage. The wastewater is lifted to the HA-UBF reactor from the intermediate water tank, the HA-UBF load capacity is very large, the HA-UBF reactor is suitable for treating high-concentration organic wastewater, and most organic pollutants in the wastewater are degraded into methane and carbon dioxide through anaerobic fermentation in the process. The effluent of the HA-UBF reactor sequentially passes through an anoxic tank and an aerobic tank (two-stage A/O). Through the action of microorganisms, most pollutants CODcr, ammonia nitrogen, total nitrogen and total phosphorus in the sewage are degraded and removed in a biochemical section. And the effluent of the oxidation tank automatically flows into a secondary sedimentation tank to realize sludge-water separation. And part of the sludge in the secondary sedimentation tank flows back to the anoxic tank, and most of the residual sludge is discharged into the sludge tank for storage.
The effluent of the secondary sedimentation tank flows into a flocculation reaction tank, suspended matters and partial phosphate in the effluent of the secondary sedimentation tank are fully mixed with a flocculating agent to react to form large flocs, mixed liquid enters a high-efficiency sedimentation tank to be deeply precipitated, the suspended matters and the residual phosphate in the water are removed, the effluent of the high-efficiency sedimentation tank flows into a clear water disinfection tank, sodium hypochlorite is added into the clear water disinfection tank to kill most of escherichia coli, the disinfected wastewater and the load distribution of each treatment unit are shown in a table 3, and the one-level A discharge standard is completely met.
TABLE 3 load distribution Table for each processing unit
The invention obtains the same or similar results with the embodiment through a plurality of tests of different amounts of waste water, which shows that the method is stable and reliable and is not repeated.
The method has the advantages that the waste water treated by the method completely reaches the discharge standard, the design is scientific and reasonable, the pig slaughter waste water is pretreated according to the quality, the characteristics that the waste water to be slaughtered and the white tripe waste water in the pig slaughter waste water contain a large amount of excrement are fully considered, the subsequent treatment burden is greatly reduced, the problem of stable removal of total nitrogen, total phosphorus and suspended matters in the discharge standard is fully considered, the efficiency and the quality of waste water treatment are improved, the discharge reaches the standard, and the method has remarkable social and economic benefits.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto in any way, and those skilled in the art can make modifications or equivalent variations to the above-mentioned embodiments without departing from the scope of the present invention. Although terms indicating structure such as "A/O", "HA-UBF reactor", etc. are used more above, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (9)
1. A method for treating pig slaughtering wastewater is characterized by comprising the following steps:
A. wastewater pretreatment: waste water to be slaughtered and production and domestic sewage respectively enter a first grating (1) and a second grating (4), filtration treatment is carried out to remove larger suspended matters, floating matters, fiber substances and solid particle substances in the sewage, grating residues are transported outside for additional treatment, the waste water filtered by the first grating (1) and the second grating (4) respectively enters a septic tank (2) and a water collecting well (5), and then is lifted by a pump to enter a first solid-liquid separator (3) and a second solid-liquid separator (6) to remove fine impurities and excrement, and the effluent enters an adjusting tank (7);
B. oil removal and precipitation: the wastewater is uniformly mixed in an adjusting tank (7), the water quality and the water quantity are adjusted, the pH =6-9 is adjusted, the effluent of the adjusting tank (7) enters an oil separation sedimentation tank (8), suspended matters and animal and vegetable oil in the wastewater are removed, and after oil separation sedimentation treatment, the wastewater flows to an advection flotation tank (9);
C. air floatation treatment: 30-80mg/L PAC and 2-5mg/L PAM are added into an advection floatation tank (9) to remove most suspended substances and animal and vegetable oil in the wastewater, and effluent enters an intermediate water tank (10) for temporary storage and then enters an HA-UBF device (11);
D. HA-UBF reaction: activated sludge with hydrolytic acidification bacteria, methanogen strains, nitrosobacteria and anaerobic ammonium oxidation bacteria is added into an HA-UBF device (11), most organic matters are removed through hydrolytic acidification and methanogenesis, meanwhile, difficultly-degradable macromolecular organic matters are converted and degraded into micromolecular organic matters, and the treated wastewater respectively enters a first anoxic tank (12) and a second anoxic tank (14) through a first tee joint (24);
E. two-stage A/O reaction: the wastewater treated by the HA-UBF device (11) sequentially enters a first anoxic tank (12), a first contact oxidation tank (13), a second anoxic tank (14) and a second contact oxidation tank (15) to carry out two-stage A/O reaction, so that most pollutants CODcr, ammonia nitrogen, total nitrogen and total phosphorus are degraded and removed, and the effluent of the second contact oxidation tank (15) enters a secondary sedimentation tank (16);
F. precipitation and flocculation: the method comprises the steps that sludge and water separation of wastewater is realized in a secondary sedimentation tank (16), sludge in the secondary sedimentation tank (16) enters a first anoxic tank (12) and a sludge concentration tank (20) through a second tee joint (25), effluent of the secondary sedimentation tank (16) enters a flocculation reaction tank (17), PAC and PAM are added into the flocculation reaction tank (17), the dosage of PAC is 20-50mg/L, the dosage of PAM is 1-3mg/L, flocculation reaction is performed for 0.5-1h, reaction mixed liquid enters a high-efficiency sedimentation tank (18), hydraulic power stays for 1-2h, deep sedimentation is performed, and suspended matters and residual phosphate in water are removed;
G. and (3) disinfection: the effluent of the high-efficiency sedimentation tank (18) enters a disinfection tank (19), the disinfection tank (19) comprises a disinfection area and a detoxification area which are communicated through a pipeline, 5-10mg/L of chlorine-containing disinfectant or peroxide disinfectant is added into the disinfection area, the chlorine-containing disinfectant or the peroxide disinfectant kills pathogenic bacteria in the wastewater, the wastewater hydraulically stays in the disinfection tank (19) for 1-2 hours, wherein the disinfection area stays for more than 30 minutes, the effluent of the disinfection area enters the detoxification area, an oxygenation aeration system is arranged in the detoxification area to accelerate degradation and dissipation of residual chlorine, and meanwhile, the water body is oxygenated, so that the effluent is clear, and the effluent of the disinfection tank reaches the first-level A discharge standard and is directly discharged outside;
H. sludge treatment: the sludge in the secondary sedimentation tank (16) and the high-efficiency sedimentation tank (18) enters a sludge concentration tank (20) for concentration, the concentrated sludge enters a dehydrator (21) for dehydration, 2-5mg/L PAM is added into the dehydrator (21), the dehydrated dry sludge is transported out for disposal, and the filtrate enters a septic tank (2) for secondary filtration.
2. The pig slaughter wastewater treatment method according to claim 1, wherein the HA-UBF device (11) is divided according to a ratio of 1:1-4:1, and enters the first anoxic tank (12) and the second anoxic tank (14) respectively, in the first anoxic tank (12), nitrite brought by the HA-UBF (11) is firstly converted into nitrogen by denitrifying bacteria by using a carbon source and discharged out of a water body, nitrate returned by the second contact oxidation tank (15) is also converted into nitrogen by the denitrifying bacteria by using the carbon source and discharged out of the water body, and phosphorus accumulating bacteria returned from the second anoxic tank (14) and the secondary sedimentation tank (16) release phosphorus and absorb the carbon source in carbon source storage under anaerobic conditions; the effluent of the first anoxic tank (12) enters a first contact oxidation tank (13), nitrifying bacteria in a biological membrane and a water body convert ammonia nitrogen in the wastewater into nitrate, and phosphorus accumulating bacteria store the nitrate in cells by utilizing an internal carbon source and excessively absorbing phosphorus under an aerobic condition; the effluent of the first contact oxidation pond (13) enters a second anoxic pond (14), and nitrate generated by the first contact oxidation pond (13) is converted into nitrogen by denitrifying bacteria by using a carbon source and is discharged out of a water body; the effluent of the second anoxic tank (14) enters a second contact oxidation tank (15), residual ammonia nitrogen in the wastewater is converted into nitrate by nitrifying bacteria in a biomembrane and a water body, the effluent of the second contact oxidation tank (15) enters a secondary sedimentation tank (16) to realize sludge-water separation, the mixed liquid of the second anoxic tank (14) and the second contact oxidation tank (15) flows back to the first anoxic tank (12), and most pollutants CODcr, ammonia nitrogen, total nitrogen and total phosphorus are degraded and removed through the action of microorganisms and sludge discharge.
3. The pig slaughtering wastewater treatment method according to claim 1, wherein aeration devices are arranged at the bottoms of the regulating tank (7) and the oil separation sedimentation tank (8), and an air outlet of the roots blower (22) is communicated with an air inlet of the aeration device through a pipeline and is used for carrying out gas stirring and full reaction on wastewater in the regulating tank (7) and the oil separation sedimentation tank (8).
4. The pig slaughter wastewater treatment method according to claim 1, wherein aeration devices are arranged at the bottoms of the first contact oxidation pond (13) and the second contact oxidation pond (15), an air outlet of the magnetic suspension blower (23) is communicated with an air inlet of the aeration device through a pipeline, and the magnetic suspension blower (23) provides aeration to increase the dissolved oxygen.
5. The pig slaughter wastewater treatment method according to claim 1, wherein the first grid (1) and the second grid (4) are both mechanical grids, and the grid gap is 2-5 mm; the first solid-liquid separator (3) and the second solid-liquid separator (6) are inclined screen type solid-liquid separators, and the screen gap is 0.1-0.5 mm.
6. The wastewater treatment method for pig slaughter according to claim 1, wherein the dehydrator (21) is a stack screw or plate frame dehydrator.
7. The process for treating wastewater from pig slaughter according to claim 1, wherein a stirrer is provided in said conditioning tank (7).
8. The method for treating wastewater from pig slaughter according to claim 1, wherein the chlorine-containing disinfectant is sodium hypochlorite.
9. The process for the treatment of wastewater from pig slaughter according to claim 1, wherein said HA-UBF (11) consists of 4 reaction zones from bottom to top: the first reaction area is a granular sludge area (11-1) at the lower part, the second reaction area is a suspended sludge area (11-2), the third reaction area is a three-phase separation area (11-3), the fourth reaction area is a filler area (11-4) at the upper part, a micro-oxygen aerator is arranged at the bottom of the filler area (11-4) and controls the dissolved oxygen to be 0.2-1mg/L, activated sludge with nitrosobacteria and anaerobic ammonium oxidation bacteria strains is added in the area, a biological membrane is attached to the surface of the filler, the outer layer of the membrane mainly comprises nitrosobacteria, the inner layer mainly comprises anaerobic ammonium oxidation bacteria, under the condition of micro-oxygen aeration, nitrosobacteria convert part of ammonia nitrogen into nitrite by using a carbon source, the nitrite is transferred to the anaerobic ammonium oxidation bacteria inside the membrane, the anaerobic ammonium oxidation bacteria oxidize the ammonia nitrogen by using nitrite as an electron acceptor and generate nitrogen and a small amount of nitrate, realizing the pre-denitrification and decarburization functions.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090051450A (en) * | 2007-11-19 | 2009-05-22 | 강우식 | The treatment method of high concentrated organic waste water,like with leachate of food waste water and animal waste water |
| CN105293815A (en) * | 2014-07-23 | 2016-02-03 | 金乡县大蒜研究所 | Method for treating high-concentration sewage produced from garlic processing |
| CN205710341U (en) * | 2016-06-27 | 2016-11-23 | 江苏佳羽环境科技有限公司 | A kind of pharmacy wastewater treatment system |
| WO2016206416A1 (en) * | 2015-06-22 | 2016-12-29 | 张萍 | Sewage recycling treatment method |
| CN208292824U (en) * | 2018-04-28 | 2018-12-28 | 陕西昕宇表面工程有限公司 | A kind of starch gourmet powder waste water biochemistry intensive treatment system |
| CN208964756U (en) * | 2018-10-12 | 2019-06-11 | 河南恒安环保科技有限公司 | A kind of gelatine production wastewater treatment equipment |
-
2021
- 2021-12-29 CN CN202111634467.8A patent/CN114212955B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090051450A (en) * | 2007-11-19 | 2009-05-22 | 강우식 | The treatment method of high concentrated organic waste water,like with leachate of food waste water and animal waste water |
| CN105293815A (en) * | 2014-07-23 | 2016-02-03 | 金乡县大蒜研究所 | Method for treating high-concentration sewage produced from garlic processing |
| WO2016206416A1 (en) * | 2015-06-22 | 2016-12-29 | 张萍 | Sewage recycling treatment method |
| CN205710341U (en) * | 2016-06-27 | 2016-11-23 | 江苏佳羽环境科技有限公司 | A kind of pharmacy wastewater treatment system |
| CN208292824U (en) * | 2018-04-28 | 2018-12-28 | 陕西昕宇表面工程有限公司 | A kind of starch gourmet powder waste water biochemistry intensive treatment system |
| CN208964756U (en) * | 2018-10-12 | 2019-06-11 | 河南恒安环保科技有限公司 | A kind of gelatine production wastewater treatment equipment |
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